Home / 688,288.48-949,807.22-382,386.28

Finding the Fourth Proportional to 688,288.48, 949,807.22 and 382,386.28

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Solution

The fourth proportional to 688,288.48, 949,807.22 and 382,386.28 is: 527,675.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,288.48 : 949,807.22 = 382,386.28 : x
  2. Step 2: Convert to fraction form
    688,288.48/949,807.22 = 382,386.28/x
  3. Step 3: Cross multiply
    688,288.48x = 949,807.22 × 382,386.28
  4. Step 4: Simplify right side
    688,288.48x = 363,193,249,572.94
  5. Step 5: Solve for x
    x = 363,193,249,572.94/688,288.48
  6. Step 6: Final answer
    x = 527,675.91

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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.