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Finding the Fourth Proportional to 610,420.90, 915,631.35 and 579,316.90

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Solution

The fourth proportional to 610,420.90, 915,631.35 and 579,316.90 is: 868,975.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,420.90 : 915,631.35 = 579,316.90 : x
  2. Step 2: Convert to fraction form
    610,420.90/915,631.35 = 579,316.90/x
  3. Step 3: Cross multiply
    610,420.90x = 915,631.35 × 579,316.90
  4. Step 4: Simplify right side
    610,420.90x = 530,440,715,224.82
  5. Step 5: Solve for x
    x = 530,440,715,224.82/610,420.90
  6. Step 6: Final answer
    x = 868,975.35

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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.