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Finding the Fourth Proportional to 679,382, 938,506.44 and 544,312.88

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Solution

The fourth proportional to 679,382, 938,506.44 and 544,312.88 is: 751,920.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,382 : 938,506.44 = 544,312.88 : x
  2. Step 2: Convert to fraction form
    679,382/938,506.44 = 544,312.88/x
  3. Step 3: Cross multiply
    679,382x = 938,506.44 × 544,312.88
  4. Step 4: Simplify right side
    679,382x = 510,841,143,254.95
  5. Step 5: Solve for x
    x = 510,841,143,254.95/679,382
  6. Step 6: Final answer
    x = 751,920.34

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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.