Home / 745,415.70-1,028,411.37-487,443.66

Finding the Fourth Proportional to 745,415.70, 1,028,411.37 and 487,443.66

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Solution

The fourth proportional to 745,415.70, 1,028,411.37 and 487,443.66 is: 672,500.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,415.70 : 1,028,411.37 = 487,443.66 : x
  2. Step 2: Convert to fraction form
    745,415.70/1,028,411.37 = 487,443.66/x
  3. Step 3: Cross multiply
    745,415.70x = 1,028,411.37 × 487,443.66
  4. Step 4: Simplify right side
    745,415.70x = 501,292,602,178.41
  5. Step 5: Solve for x
    x = 501,292,602,178.41/745,415.70
  6. Step 6: Final answer
    x = 672,500.73

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Double scale
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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.