Home / 1,121,425.77-1,681,547.55-489,601.47

Finding the Fourth Proportional to 1,121,425.77, 1,681,547.55 and 489,601.47

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Solution

The fourth proportional to 1,121,425.77, 1,681,547.55 and 489,601.47 is: 734,144.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,425.77 : 1,681,547.55 = 489,601.47 : x
  2. Step 2: Convert to fraction form
    1,121,425.77/1,681,547.55 = 489,601.47/x
  3. Step 3: Cross multiply
    1,121,425.77x = 1,681,547.55 × 489,601.47
  4. Step 4: Simplify right side
    1,121,425.77x = 823,288,152,354.90
  5. Step 5: Solve for x
    x = 823,288,152,354.90/1,121,425.77
  6. Step 6: Final answer
    x = 734,144.14

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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.