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Finding the Fourth Proportional to 855,630.76, 1,180,779.78 and 473,663.92

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Solution

The fourth proportional to 855,630.76, 1,180,779.78 and 473,663.92 is: 653,661.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,630.76 : 1,180,779.78 = 473,663.92 : x
  2. Step 2: Convert to fraction form
    855,630.76/1,180,779.78 = 473,663.92/x
  3. Step 3: Cross multiply
    855,630.76x = 1,180,779.78 × 473,663.92
  4. Step 4: Simplify right side
    855,630.76x = 559,292,779,251.54
  5. Step 5: Solve for x
    x = 559,292,779,251.54/855,630.76
  6. Step 6: Final answer
    x = 653,661.38

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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.