Home / 989,813.70-1,484,769.15-517,421.70

Finding the Fourth Proportional to 989,813.70, 1,484,769.15 and 517,421.70

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Solution

The fourth proportional to 989,813.70, 1,484,769.15 and 517,421.70 is: 776,157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,813.70 : 1,484,769.15 = 517,421.70 : x
  2. Step 2: Convert to fraction form
    989,813.70/1,484,769.15 = 517,421.70/x
  3. Step 3: Cross multiply
    989,813.70x = 1,484,769.15 × 517,421.70
  4. Step 4: Simplify right side
    989,813.70x = 768,251,777,700.56
  5. Step 5: Solve for x
    x = 768,251,777,700.56/989,813.70
  6. Step 6: Final answer
    x = 776,157.96

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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.