Home / 711,654.13-981,985.71-425,113.39

Finding the Fourth Proportional to 711,654.13, 981,985.71 and 425,113.39

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Solution

The fourth proportional to 711,654.13, 981,985.71 and 425,113.39 is: 586,598.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,654.13 : 981,985.71 = 425,113.39 : x
  2. Step 2: Convert to fraction form
    711,654.13/981,985.71 = 425,113.39/x
  3. Step 3: Cross multiply
    711,654.13x = 981,985.71 × 425,113.39
  4. Step 4: Simplify right side
    711,654.13x = 417,455,274,109.66
  5. Step 5: Solve for x
    x = 417,455,274,109.66/711,654.13
  6. Step 6: Final answer
    x = 586,598.54

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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.