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Finding the Fourth Proportional to 724,365.53, 999,669.80 and 402,081.01

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Solution

The fourth proportional to 724,365.53, 999,669.80 and 402,081.01 is: 554,896.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,365.53 : 999,669.80 = 402,081.01 : x
  2. Step 2: Convert to fraction form
    724,365.53/999,669.80 = 402,081.01/x
  3. Step 3: Cross multiply
    724,365.53x = 999,669.80 × 402,081.01
  4. Step 4: Simplify right side
    724,365.53x = 401,948,246,979.67
  5. Step 5: Solve for x
    x = 401,948,246,979.67/724,365.53
  6. Step 6: Final answer
    x = 554,896.98

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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.