Home / 990,811.96-1,367,328.54-538,106.20

Finding the Fourth Proportional to 990,811.96, 1,367,328.54 and 538,106.20

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Solution

The fourth proportional to 990,811.96, 1,367,328.54 and 538,106.20 is: 742,590.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,811.96 : 1,367,328.54 = 538,106.20 : x
  2. Step 2: Convert to fraction form
    990,811.96/1,367,328.54 = 538,106.20/x
  3. Step 3: Cross multiply
    990,811.96x = 1,367,328.54 × 538,106.20
  4. Step 4: Simplify right side
    990,811.96x = 735,767,964,810.95
  5. Step 5: Solve for x
    x = 735,767,964,810.95/990,811.96
  6. Step 6: Final answer
    x = 742,590.92

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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.