Home / 914,690.07-1,262,711.07-642,990.87

Finding the Fourth Proportional to 914,690.07, 1,262,711.07 and 642,990.87

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Solution

The fourth proportional to 914,690.07, 1,262,711.07 and 642,990.87 is: 887,635.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,690.07 : 1,262,711.07 = 642,990.87 : x
  2. Step 2: Convert to fraction form
    914,690.07/1,262,711.07 = 642,990.87/x
  3. Step 3: Cross multiply
    914,690.07x = 1,262,711.07 × 642,990.87
  4. Step 4: Simplify right side
    914,690.07x = 811,911,689,457.93
  5. Step 5: Solve for x
    x = 811,911,689,457.93/914,690.07
  6. Step 6: Final answer
    x = 887,635.84

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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.