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Finding the Fourth Proportional to 875,415.78, 1,208,073.42 and 473,007.78

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Solution

The fourth proportional to 875,415.78, 1,208,073.42 and 473,007.78 is: 652,750.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,415.78 : 1,208,073.42 = 473,007.78 : x
  2. Step 2: Convert to fraction form
    875,415.78/1,208,073.42 = 473,007.78/x
  3. Step 3: Cross multiply
    875,415.78x = 1,208,073.42 × 473,007.78
  4. Step 4: Simplify right side
    875,415.78x = 571,428,126,471.21
  5. Step 5: Solve for x
    x = 571,428,126,471.21/875,415.78
  6. Step 6: Final answer
    x = 652,750.54

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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.