Home / 972,331.29-1,342,408.55-666,909.45

Finding the Fourth Proportional to 972,331.29, 1,342,408.55 and 666,909.45

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Solution

The fourth proportional to 972,331.29, 1,342,408.55 and 666,909.45 is: 920,740.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,331.29 : 1,342,408.55 = 666,909.45 : x
  2. Step 2: Convert to fraction form
    972,331.29/1,342,408.55 = 666,909.45/x
  3. Step 3: Cross multiply
    972,331.29x = 1,342,408.55 × 666,909.45
  4. Step 4: Simplify right side
    972,331.29x = 895,264,944,421.25
  5. Step 5: Solve for x
    x = 895,264,944,421.25/972,331.29
  6. Step 6: Final answer
    x = 920,740.65

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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.