Home / 485,810.16-723,885.86-432,812.40

Finding the Fourth Proportional to 485,810.16, 723,885.86 and 432,812.40

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Solution

The fourth proportional to 485,810.16, 723,885.86 and 432,812.40 is: 644,916.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,810.16 : 723,885.86 = 432,812.40 : x
  2. Step 2: Convert to fraction form
    485,810.16/723,885.86 = 432,812.40/x
  3. Step 3: Cross multiply
    485,810.16x = 723,885.86 × 432,812.40
  4. Step 4: Simplify right side
    485,810.16x = 313,306,776,392.66
  5. Step 5: Solve for x
    x = 313,306,776,392.66/485,810.16
  6. Step 6: Final answer
    x = 644,916.06

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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.