Home / 875,138.80-1,312,999.40-314,217.20

Finding the Fourth Proportional to 875,138.80, 1,312,999.40 and 314,217.20

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Solution

The fourth proportional to 875,138.80, 1,312,999.40 and 314,217.20 is: 471,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,138.80 : 1,312,999.40 = 314,217.20 : x
  2. Step 2: Convert to fraction form
    875,138.80/1,312,999.40 = 314,217.20/x
  3. Step 3: Cross multiply
    875,138.80x = 1,312,999.40 × 314,217.20
  4. Step 4: Simplify right side
    875,138.80x = 412,566,995,069.68
  5. Step 5: Solve for x
    x = 412,566,995,069.68/875,138.80
  6. Step 6: Final answer
    x = 471,430.35

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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.