Home / 977,139.10-1,465,708.65-416,230.30

Finding the Fourth Proportional to 977,139.10, 1,465,708.65 and 416,230.30

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Solution

The fourth proportional to 977,139.10, 1,465,708.65 and 416,230.30 is: 624,345.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,139.10 : 1,465,708.65 = 416,230.30 : x
  2. Step 2: Convert to fraction form
    977,139.10/1,465,708.65 = 416,230.30/x
  3. Step 3: Cross multiply
    977,139.10x = 1,465,708.65 × 416,230.30
  4. Step 4: Simplify right side
    977,139.10x = 610,072,351,102.10
  5. Step 5: Solve for x
    x = 610,072,351,102.10/977,139.10
  6. Step 6: Final answer
    x = 624,345.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.