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Finding the Fourth Proportional to 485,808.16, 723,882.88 and 432,810.40

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Solution

The fourth proportional to 485,808.16, 723,882.88 and 432,810.40 is: 644,913.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,808.16 : 723,882.88 = 432,810.40 : x
  2. Step 2: Convert to fraction form
    485,808.16/723,882.88 = 432,810.40/x
  3. Step 3: Cross multiply
    485,808.16x = 723,882.88 × 432,810.40
  4. Step 4: Simplify right side
    485,808.16x = 313,304,038,845.95
  5. Step 5: Solve for x
    x = 313,304,038,845.95/485,808.16
  6. Step 6: Final answer
    x = 644,913.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.