Home / 989,173.72-1,482,985.45-390,582.93

Finding the Fourth Proportional to 989,173.72, 1,482,985.45 and 390,582.93

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Solution

The fourth proportional to 989,173.72, 1,482,985.45 and 390,582.93 is: 585,568.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,173.72 : 1,482,985.45 = 390,582.93 : x
  2. Step 2: Convert to fraction form
    989,173.72/1,482,985.45 = 390,582.93/x
  3. Step 3: Cross multiply
    989,173.72x = 1,482,985.45 × 390,582.93
  4. Step 4: Simplify right side
    989,173.72x = 579,228,808,257.79
  5. Step 5: Solve for x
    x = 579,228,808,257.79/989,173.72
  6. Step 6: Final answer
    x = 585,568.33

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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.