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Finding the Fourth Proportional to 352,613.80, 528,920.70 and 345,615.40

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Solution

The fourth proportional to 352,613.80, 528,920.70 and 345,615.40 is: 518,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,613.80 : 528,920.70 = 345,615.40 : x
  2. Step 2: Convert to fraction form
    352,613.80/528,920.70 = 345,615.40/x
  3. Step 3: Cross multiply
    352,613.80x = 528,920.70 × 345,615.40
  4. Step 4: Simplify right side
    352,613.80x = 182,803,139,298.78
  5. Step 5: Solve for x
    x = 182,803,139,298.78/352,613.80
  6. Step 6: Final answer
    x = 518,423.10

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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.