Home / 931,176,154.89-1,285,054,115.49-507,812,915.43

Finding the Fourth Proportional to 931,176,154.89, 1,285,054,115.49 and 507,812,915.43

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Solution

The fourth proportional to 931,176,154.89, 1,285,054,115.49 and 507,812,915.43 is: 700,798,740.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,176,154.89 : 1,285,054,115.49 = 507,812,915.43 : x
  2. Step 2: Convert to fraction form
    931,176,154.89/1,285,054,115.49 = 507,812,915.43/x
  3. Step 3: Cross multiply
    931,176,154.89x = 1,285,054,115.49 × 507,812,915.43
  4. Step 4: Simplify right side
    931,176,154.89x = 652,567,076,872,296,832
  5. Step 5: Solve for x
    x = 652,567,076,872,296,832/931,176,154.89
  6. Step 6: Final answer
    x = 700,798,740.87

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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.