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Finding the Fourth Proportional to 630,590.80, 870,208.14 and 344,115.76

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Solution

The fourth proportional to 630,590.80, 870,208.14 and 344,115.76 is: 474,875.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,590.80 : 870,208.14 = 344,115.76 : x
  2. Step 2: Convert to fraction form
    630,590.80/870,208.14 = 344,115.76/x
  3. Step 3: Cross multiply
    630,590.80x = 870,208.14 × 344,115.76
  4. Step 4: Simplify right side
    630,590.80x = 299,452,335,454.29
  5. Step 5: Solve for x
    x = 299,452,335,454.29/630,590.80
  6. Step 6: Final answer
    x = 474,875.84

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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.