Home / 743,587.72-1,026,148.34-421,359.16

Finding the Fourth Proportional to 743,587.72, 1,026,148.34 and 421,359.16

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Solution

The fourth proportional to 743,587.72, 1,026,148.34 and 421,359.16 is: 581,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,587.72 : 1,026,148.34 = 421,359.16 : x
  2. Step 2: Convert to fraction form
    743,587.72/1,026,148.34 = 421,359.16/x
  3. Step 3: Cross multiply
    743,587.72x = 1,026,148.34 × 421,359.16
  4. Step 4: Simplify right side
    743,587.72x = 432,377,002,577.79
  5. Step 5: Solve for x
    x = 432,377,002,577.79/743,587.72
  6. Step 6: Final answer
    x = 581,474.10

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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.