Home / 787,971.95-1,086,990.03-497,479.06

Finding the Fourth Proportional to 787,971.95, 1,086,990.03 and 497,479.06

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Solution

The fourth proportional to 787,971.95, 1,086,990.03 and 497,479.06 is: 686,261.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,971.95 : 1,086,990.03 = 497,479.06 : x
  2. Step 2: Convert to fraction form
    787,971.95/1,086,990.03 = 497,479.06/x
  3. Step 3: Cross multiply
    787,971.95x = 1,086,990.03 × 497,479.06
  4. Step 4: Simplify right side
    787,971.95x = 540,754,778,353.77
  5. Step 5: Solve for x
    x = 540,754,778,353.77/787,971.95
  6. Step 6: Final answer
    x = 686,261.46

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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.