Home / 1,286,417.60-1,929,719.28-339,776

Finding the Fourth Proportional to 1,286,417.60, 1,929,719.28 and 339,776

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Solution

The fourth proportional to 1,286,417.60, 1,929,719.28 and 339,776 is: 509,688.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,417.60 : 1,929,719.28 = 339,776 : x
  2. Step 2: Convert to fraction form
    1,286,417.60/1,929,719.28 = 339,776/x
  3. Step 3: Cross multiply
    1,286,417.60x = 1,929,719.28 × 339,776
  4. Step 4: Simplify right side
    1,286,417.60x = 655,672,298,081.28
  5. Step 5: Solve for x
    x = 655,672,298,081.28/1,286,417.60
  6. Step 6: Final answer
    x = 509,688.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.