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Finding the Fourth Proportional to 488,457.40, 732,686.10 and 346,739.80

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Solution

The fourth proportional to 488,457.40, 732,686.10 and 346,739.80 is: 520,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,457.40 : 732,686.10 = 346,739.80 : x
  2. Step 2: Convert to fraction form
    488,457.40/732,686.10 = 346,739.80/x
  3. Step 3: Cross multiply
    488,457.40x = 732,686.10 × 346,739.80
  4. Step 4: Simplify right side
    488,457.40x = 254,051,431,776.78
  5. Step 5: Solve for x
    x = 254,051,431,776.78/488,457.40
  6. Step 6: Final answer
    x = 520,109.70

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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.