Home / 986,875.40-1,480,658.70-426,312.20

Finding the Fourth Proportional to 986,875.40, 1,480,658.70 and 426,312.20

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Solution

The fourth proportional to 986,875.40, 1,480,658.70 and 426,312.20 is: 639,617.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,875.40 : 1,480,658.70 = 426,312.20 : x
  2. Step 2: Convert to fraction form
    986,875.40/1,480,658.70 = 426,312.20/x
  3. Step 3: Cross multiply
    986,875.40x = 1,480,658.70 × 426,312.20
  4. Step 4: Simplify right side
    986,875.40x = 631,222,867,846.14
  5. Step 5: Solve for x
    x = 631,222,867,846.14/986,875.40
  6. Step 6: Final answer
    x = 639,617.59

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1.5x scale

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.