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Finding the Fourth Proportional to 868,510.80, 1,302,459 and 413,048.40

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Solution

The fourth proportional to 868,510.80, 1,302,459 and 413,048.40 is: 619,426.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,510.80 : 1,302,459 = 413,048.40 : x
  2. Step 2: Convert to fraction form
    868,510.80/1,302,459 = 413,048.40/x
  3. Step 3: Cross multiply
    868,510.80x = 1,302,459 × 413,048.40
  4. Step 4: Simplify right side
    868,510.80x = 537,978,606,015.60
  5. Step 5: Solve for x
    x = 537,978,606,015.60/868,510.80
  6. Step 6: Final answer
    x = 619,426.50

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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.