Home / 931,176,154.85-1,285,054,115.45-507,812,915.39

Finding the Fourth Proportional to 931,176,154.85, 1,285,054,115.45 and 507,812,915.39

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Solution

The fourth proportional to 931,176,154.85, 1,285,054,115.45 and 507,812,915.39 is: 700,798,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,176,154.85 : 1,285,054,115.45 = 507,812,915.39 : x
  2. Step 2: Convert to fraction form
    931,176,154.85/1,285,054,115.45 = 507,812,915.39/x
  3. Step 3: Cross multiply
    931,176,154.85x = 1,285,054,115.45 × 507,812,915.39
  4. Step 4: Simplify right side
    931,176,154.85x = 652,567,076,791,617,792
  5. Step 5: Solve for x
    x = 652,567,076,791,617,792/931,176,154.85
  6. Step 6: Final answer
    x = 700,798,740.81

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Double scale
Find fourth proportional to 931,176,155.85, 1,285,054,116.83 and 507,812,916.39
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.