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Finding the Fourth Proportional to 572,364.82, 789,945.63 and 342,931.21

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Solution

The fourth proportional to 572,364.82, 789,945.63 and 342,931.21 is: 473,294.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,364.82 : 789,945.63 = 342,931.21 : x
  2. Step 2: Convert to fraction form
    572,364.82/789,945.63 = 342,931.21/x
  3. Step 3: Cross multiply
    572,364.82x = 789,945.63 × 342,931.21
  4. Step 4: Simplify right side
    572,364.82x = 270,897,010,730.11
  5. Step 5: Solve for x
    x = 270,897,010,730.11/572,364.82
  6. Step 6: Final answer
    x = 473,294.31

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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.