Home / 942,390.12-1,300,500.18-512,672.16

Finding the Fourth Proportional to 942,390.12, 1,300,500.18 and 512,672.16

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Solution

The fourth proportional to 942,390.12, 1,300,500.18 and 512,672.16 is: 707,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,390.12 : 1,300,500.18 = 512,672.16 : x
  2. Step 2: Convert to fraction form
    942,390.12/1,300,500.18 = 512,672.16/x
  3. Step 3: Cross multiply
    942,390.12x = 1,300,500.18 × 512,672.16
  4. Step 4: Simplify right side
    942,390.12x = 666,730,236,360.99
  5. Step 5: Solve for x
    x = 666,730,236,360.99/942,390.12
  6. Step 6: Final answer
    x = 707,488.57

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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.