Home / 715,974.56-987,056.46-571,271.70

Finding the Fourth Proportional to 715,974.56, 987,056.46 and 571,271.70

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Solution

The fourth proportional to 715,974.56, 987,056.46 and 571,271.70 is: 787,566.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,974.56 : 987,056.46 = 571,271.70 : x
  2. Step 2: Convert to fraction form
    715,974.56/987,056.46 = 571,271.70/x
  3. Step 3: Cross multiply
    715,974.56x = 987,056.46 × 571,271.70
  4. Step 4: Simplify right side
    715,974.56x = 563,877,421,900.18
  5. Step 5: Solve for x
    x = 563,877,421,900.18/715,974.56
  6. Step 6: Final answer
    x = 787,566.28

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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.