Home / 818,065.30-1,129,484.28-512,264.38

Finding the Fourth Proportional to 818,065.30, 1,129,484.28 and 512,264.38

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Solution

The fourth proportional to 818,065.30, 1,129,484.28 and 512,264.38 is: 707,271.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,065.30 : 1,129,484.28 = 512,264.38 : x
  2. Step 2: Convert to fraction form
    818,065.30/1,129,484.28 = 512,264.38/x
  3. Step 3: Cross multiply
    818,065.30x = 1,129,484.28 × 512,264.38
  4. Step 4: Simplify right side
    818,065.30x = 578,594,564,413.95
  5. Step 5: Solve for x
    x = 578,594,564,413.95/818,065.30
  6. Step 6: Final answer
    x = 707,271.86

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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.