Home / 486,513.02-672,036.20-391,378.52

Finding the Fourth Proportional to 486,513.02, 672,036.20 and 391,378.52

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Solution

The fourth proportional to 486,513.02, 672,036.20 and 391,378.52 is: 540,623.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,513.02 : 672,036.20 = 391,378.52 : x
  2. Step 2: Convert to fraction form
    486,513.02/672,036.20 = 391,378.52/x
  3. Step 3: Cross multiply
    486,513.02x = 672,036.20 × 391,378.52
  4. Step 4: Simplify right side
    486,513.02x = 263,020,528,025.35
  5. Step 5: Solve for x
    x = 263,020,528,025.35/486,513.02
  6. Step 6: Final answer
    x = 540,623.83

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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.