Home / 877,118.31-1,210,410.18-489,939.12

Finding the Fourth Proportional to 877,118.31, 1,210,410.18 and 489,939.12

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Solution

The fourth proportional to 877,118.31, 1,210,410.18 and 489,939.12 is: 676,108.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,118.31 : 1,210,410.18 = 489,939.12 : x
  2. Step 2: Convert to fraction form
    877,118.31/1,210,410.18 = 489,939.12/x
  3. Step 3: Cross multiply
    877,118.31x = 1,210,410.18 × 489,939.12
  4. Step 4: Simplify right side
    877,118.31x = 593,027,298,428.24
  5. Step 5: Solve for x
    x = 593,027,298,428.24/877,118.31
  6. Step 6: Final answer
    x = 676,108.68

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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.