Home / 764,156.87-1,054,547.38-420,024.61

Finding the Fourth Proportional to 764,156.87, 1,054,547.38 and 420,024.61

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Solution

The fourth proportional to 764,156.87, 1,054,547.38 and 420,024.61 is: 579,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,156.87 : 1,054,547.38 = 420,024.61 : x
  2. Step 2: Convert to fraction form
    764,156.87/1,054,547.38 = 420,024.61/x
  3. Step 3: Cross multiply
    764,156.87x = 1,054,547.38 × 420,024.61
  4. Step 4: Simplify right side
    764,156.87x = 442,935,852,011.02
  5. Step 5: Solve for x
    x = 442,935,852,011.02/764,156.87
  6. Step 6: Final answer
    x = 579,639.95

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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.