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Finding the Fourth Proportional to 642,070.63, 885,856.57 and 370,101.39

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Solution

The fourth proportional to 642,070.63, 885,856.57 and 370,101.39 is: 510,624.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,070.63 : 885,856.57 = 370,101.39 : x
  2. Step 2: Convert to fraction form
    642,070.63/885,856.57 = 370,101.39/x
  3. Step 3: Cross multiply
    642,070.63x = 885,856.57 × 370,101.39
  4. Step 4: Simplify right side
    642,070.63x = 327,856,747,897.63
  5. Step 5: Solve for x
    x = 327,856,747,897.63/642,070.63
  6. Step 6: Final answer
    x = 510,624.12

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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.