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Finding the Fourth Proportional to 486,425.40, 728,082.90 and 346,457.40

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Solution

The fourth proportional to 486,425.40, 728,082.90 and 346,457.40 is: 518,578.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,425.40 : 728,082.90 = 346,457.40 : x
  2. Step 2: Convert to fraction form
    486,425.40/728,082.90 = 346,457.40/x
  3. Step 3: Cross multiply
    486,425.40x = 728,082.90 × 346,457.40
  4. Step 4: Simplify right side
    486,425.40x = 252,249,708,518.46
  5. Step 5: Solve for x
    x = 252,249,708,518.46/486,425.40
  6. Step 6: Final answer
    x = 518,578.41

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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.