Home / 990,819.42-1,486,229.13-429,841.50

Finding the Fourth Proportional to 990,819.42, 1,486,229.13 and 429,841.50

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Solution

The fourth proportional to 990,819.42, 1,486,229.13 and 429,841.50 is: 644,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,819.42 : 1,486,229.13 = 429,841.50 : x
  2. Step 2: Convert to fraction form
    990,819.42/1,486,229.13 = 429,841.50/x
  3. Step 3: Cross multiply
    990,819.42x = 1,486,229.13 × 429,841.50
  4. Step 4: Simplify right side
    990,819.42x = 638,842,958,582.90
  5. Step 5: Solve for x
    x = 638,842,958,582.90/990,819.42
  6. Step 6: Final answer
    x = 644,762.25

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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.