Home / 761,643.12-1,141,063.40-477,280.68

Finding the Fourth Proportional to 761,643.12, 1,141,063.40 and 477,280.68

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Solution

The fourth proportional to 761,643.12, 1,141,063.40 and 477,280.68 is: 715,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,643.12 : 1,141,063.40 = 477,280.68 : x
  2. Step 2: Convert to fraction form
    761,643.12/1,141,063.40 = 477,280.68/x
  3. Step 3: Cross multiply
    761,643.12x = 1,141,063.40 × 477,280.68
  4. Step 4: Simplify right side
    761,643.12x = 544,607,515,475.11
  5. Step 5: Solve for x
    x = 544,607,515,475.11/761,643.12
  6. Step 6: Final answer
    x = 715,042.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.