Home / 912,806.88-1,259,681.40-510,398.88

Finding the Fourth Proportional to 912,806.88, 1,259,681.40 and 510,398.88

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Solution

The fourth proportional to 912,806.88, 1,259,681.40 and 510,398.88 is: 704,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,806.88 : 1,259,681.40 = 510,398.88 : x
  2. Step 2: Convert to fraction form
    912,806.88/1,259,681.40 = 510,398.88/x
  3. Step 3: Cross multiply
    912,806.88x = 1,259,681.40 × 510,398.88
  4. Step 4: Simplify right side
    912,806.88x = 642,939,975,716.83
  5. Step 5: Solve for x
    x = 642,939,975,716.83/912,806.88
  6. Step 6: Final answer
    x = 704,354.87

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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.