Home / 870,880.20-1,306,402.74-338,442.30

Finding the Fourth Proportional to 870,880.20, 1,306,402.74 and 338,442.30

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Solution

The fourth proportional to 870,880.20, 1,306,402.74 and 338,442.30 is: 507,695.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,880.20 : 1,306,402.74 = 338,442.30 : x
  2. Step 2: Convert to fraction form
    870,880.20/1,306,402.74 = 338,442.30/x
  3. Step 3: Cross multiply
    870,880.20x = 1,306,402.74 × 338,442.30
  4. Step 4: Simplify right side
    870,880.20x = 442,141,948,051.90
  5. Step 5: Solve for x
    x = 442,141,948,051.90/870,880.20
  6. Step 6: Final answer
    x = 507,695.49

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Double scale
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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.