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Finding the Fourth Proportional to 657,268.30, 985,513.65 and 342,340.30

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Solution

The fourth proportional to 657,268.30, 985,513.65 and 342,340.30 is: 513,307.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,268.30 : 985,513.65 = 342,340.30 : x
  2. Step 2: Convert to fraction form
    657,268.30/985,513.65 = 342,340.30/x
  3. Step 3: Cross multiply
    657,268.30x = 985,513.65 × 342,340.30
  4. Step 4: Simplify right side
    657,268.30x = 337,381,038,595.10
  5. Step 5: Solve for x
    x = 337,381,038,595.10/657,268.30
  6. Step 6: Final answer
    x = 513,307.94

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1.5x scale

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.