Home / 485,811.16-723,887.35-432,813.40

Finding the Fourth Proportional to 485,811.16, 723,887.35 and 432,813.40

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Solution

The fourth proportional to 485,811.16, 723,887.35 and 432,813.40 is: 644,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,811.16 : 723,887.35 = 432,813.40 : x
  2. Step 2: Convert to fraction form
    485,811.16/723,887.35 = 432,813.40/x
  3. Step 3: Cross multiply
    485,811.16x = 723,887.35 × 432,813.40
  4. Step 4: Simplify right side
    485,811.16x = 313,308,145,170.49
  5. Step 5: Solve for x
    x = 313,308,145,170.49/485,811.16
  6. Step 6: Final answer
    x = 644,917.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.