Home / 915,421.16-1,263,356.06-507,650.90

Finding the Fourth Proportional to 915,421.16, 1,263,356.06 and 507,650.90

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Solution

The fourth proportional to 915,421.16, 1,263,356.06 and 507,650.90 is: 700,599.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,421.16 : 1,263,356.06 = 507,650.90 : x
  2. Step 2: Convert to fraction form
    915,421.16/1,263,356.06 = 507,650.90/x
  3. Step 3: Cross multiply
    915,421.16x = 1,263,356.06 × 507,650.90
  4. Step 4: Simplify right side
    915,421.16x = 641,343,832,024.42
  5. Step 5: Solve for x
    x = 641,343,832,024.42/915,421.16
  6. Step 6: Final answer
    x = 700,599.74

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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.