Home / 691,490.40-1,038,013.20-534,415.20

Finding the Fourth Proportional to 691,490.40, 1,038,013.20 and 534,415.20

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Solution

The fourth proportional to 691,490.40, 1,038,013.20 and 534,415.20 is: 802,223.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,490.40 : 1,038,013.20 = 534,415.20 : x
  2. Step 2: Convert to fraction form
    691,490.40/1,038,013.20 = 534,415.20/x
  3. Step 3: Cross multiply
    691,490.40x = 1,038,013.20 × 534,415.20
  4. Step 4: Simplify right side
    691,490.40x = 554,730,031,880.64
  5. Step 5: Solve for x
    x = 554,730,031,880.64/691,490.40
  6. Step 6: Final answer
    x = 802,223.76

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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.