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Finding the Fourth Proportional to 724,356.04, 999,609.62 and 402,070

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Solution

The fourth proportional to 724,356.04, 999,609.62 and 402,070 is: 554,855.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,356.04 : 999,609.62 = 402,070 : x
  2. Step 2: Convert to fraction form
    724,356.04/999,609.62 = 402,070/x
  3. Step 3: Cross multiply
    724,356.04x = 999,609.62 × 402,070
  4. Step 4: Simplify right side
    724,356.04x = 401,913,039,913.40
  5. Step 5: Solve for x
    x = 401,913,039,913.40/724,356.04
  6. Step 6: Final answer
    x = 554,855.65

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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.