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Finding the Fourth Proportional to 877,570.30, 1,316,355.45 and 818,521.30

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Solution

The fourth proportional to 877,570.30, 1,316,355.45 and 818,521.30 is: 1,227,781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,570.30 : 1,316,355.45 = 818,521.30 : x
  2. Step 2: Convert to fraction form
    877,570.30/1,316,355.45 = 818,521.30/x
  3. Step 3: Cross multiply
    877,570.30x = 1,316,355.45 × 818,521.30
  4. Step 4: Simplify right side
    877,570.30x = 1,077,464,974,196.09
  5. Step 5: Solve for x
    x = 1,077,464,974,196.09/877,570.30
  6. Step 6: Final answer
    x = 1,227,781.95

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Double scale
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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.