Home / 747,475.12-1,031,501.28-407,945.80

Finding the Fourth Proportional to 747,475.12, 1,031,501.28 and 407,945.80

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Solution

The fourth proportional to 747,475.12, 1,031,501.28 and 407,945.80 is: 562,957.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,475.12 : 1,031,501.28 = 407,945.80 : x
  2. Step 2: Convert to fraction form
    747,475.12/1,031,501.28 = 407,945.80/x
  3. Step 3: Cross multiply
    747,475.12x = 1,031,501.28 × 407,945.80
  4. Step 4: Simplify right side
    747,475.12x = 420,796,614,870.62
  5. Step 5: Solve for x
    x = 420,796,614,870.62/747,475.12
  6. Step 6: Final answer
    x = 562,957.35

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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.