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Finding the Fourth Proportional to 724,303.02, 999,491.22 and 402,013.20

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Solution

The fourth proportional to 724,303.02, 999,491.22 and 402,013.20 is: 554,752.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,303.02 : 999,491.22 = 402,013.20 : x
  2. Step 2: Convert to fraction form
    724,303.02/999,491.22 = 402,013.20/x
  3. Step 3: Cross multiply
    724,303.02x = 999,491.22 × 402,013.20
  4. Step 4: Simplify right side
    724,303.02x = 401,808,663,724.10
  5. Step 5: Solve for x
    x = 401,808,663,724.10/724,303.02
  6. Step 6: Final answer
    x = 554,752.16

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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.