Home / 724,421.08-999,651.08-402,105.80

Finding the Fourth Proportional to 724,421.08, 999,651.08 and 402,105.80

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Solution

The fourth proportional to 724,421.08, 999,651.08 and 402,105.80 is: 554,878.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,421.08 : 999,651.08 = 402,105.80 : x
  2. Step 2: Convert to fraction form
    724,421.08/999,651.08 = 402,105.80/x
  3. Step 3: Cross multiply
    724,421.08x = 999,651.08 × 402,105.80
  4. Step 4: Simplify right side
    724,421.08x = 401,965,495,233.74
  5. Step 5: Solve for x
    x = 401,965,495,233.74/724,421.08
  6. Step 6: Final answer
    x = 554,878.25

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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.