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Finding the Fourth Proportional to 674,242.48, 930,444.96 and 368,315.20

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Solution

The fourth proportional to 674,242.48, 930,444.96 and 368,315.20 is: 508,269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,242.48 : 930,444.96 = 368,315.20 : x
  2. Step 2: Convert to fraction form
    674,242.48/930,444.96 = 368,315.20/x
  3. Step 3: Cross multiply
    674,242.48x = 930,444.96 × 368,315.20
  4. Step 4: Simplify right side
    674,242.48x = 342,697,021,531.39
  5. Step 5: Solve for x
    x = 342,697,021,531.39/674,242.48
  6. Step 6: Final answer
    x = 508,269.70

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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.