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Finding the Fourth Proportional to 630,269.52, 870,093.12 and 486,707.28

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Solution

The fourth proportional to 630,269.52, 870,093.12 and 486,707.28 is: 671,904.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,269.52 : 870,093.12 = 486,707.28 : x
  2. Step 2: Convert to fraction form
    630,269.52/870,093.12 = 486,707.28/x
  3. Step 3: Cross multiply
    630,269.52x = 870,093.12 × 486,707.28
  4. Step 4: Simplify right side
    630,269.52x = 423,480,655,781.91
  5. Step 5: Solve for x
    x = 423,480,655,781.91/630,269.52
  6. Step 6: Final answer
    x = 671,904.07

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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.