Home / 915,321.02-1,263,139.51-512,913.02

Finding the Fourth Proportional to 915,321.02, 1,263,139.51 and 512,913.02

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Solution

The fourth proportional to 915,321.02, 1,263,139.51 and 512,913.02 is: 707,818.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,321.02 : 1,263,139.51 = 512,913.02 : x
  2. Step 2: Convert to fraction form
    915,321.02/1,263,139.51 = 512,913.02/x
  3. Step 3: Cross multiply
    915,321.02x = 1,263,139.51 × 512,913.02
  4. Step 4: Simplify right side
    915,321.02x = 647,880,700,755.42
  5. Step 5: Solve for x
    x = 647,880,700,755.42/915,321.02
  6. Step 6: Final answer
    x = 707,818.01

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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.