Home / 747,418.95-1,031,437.86-407,887.20

Finding the Fourth Proportional to 747,418.95, 1,031,437.86 and 407,887.20

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Solution

The fourth proportional to 747,418.95, 1,031,437.86 and 407,887.20 is: 562,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,418.95 : 1,031,437.86 = 407,887.20 : x
  2. Step 2: Convert to fraction form
    747,418.95/1,031,437.86 = 407,887.20/x
  3. Step 3: Cross multiply
    747,418.95x = 1,031,437.86 × 407,887.20
  4. Step 4: Simplify right side
    747,418.95x = 420,710,300,689.39
  5. Step 5: Solve for x
    x = 420,710,300,689.39/747,418.95
  6. Step 6: Final answer
    x = 562,884.18

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Double scale
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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.