Home / 514,452.09-709,969.35-310,499.76

Finding the Fourth Proportional to 514,452.09, 709,969.35 and 310,499.76

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Solution

The fourth proportional to 514,452.09, 709,969.35 and 310,499.76 is: 428,505.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,452.09 : 709,969.35 = 310,499.76 : x
  2. Step 2: Convert to fraction form
    514,452.09/709,969.35 = 310,499.76/x
  3. Step 3: Cross multiply
    514,452.09x = 709,969.35 × 310,499.76
  4. Step 4: Simplify right side
    514,452.09x = 220,445,312,782.36
  5. Step 5: Solve for x
    x = 220,445,312,782.36/514,452.09
  6. Step 6: Final answer
    x = 428,505.04

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1.5x scale

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.