Home / 1,216,526.42-1,678,688.05-672,587.78

Finding the Fourth Proportional to 1,216,526.42, 1,678,688.05 and 672,587.78

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Solution

The fourth proportional to 1,216,526.42, 1,678,688.05 and 672,587.78 is: 928,105.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,526.42 : 1,678,688.05 = 672,587.78 : x
  2. Step 2: Convert to fraction form
    1,216,526.42/1,678,688.05 = 672,587.78/x
  3. Step 3: Cross multiply
    1,216,526.42x = 1,678,688.05 × 672,587.78
  4. Step 4: Simplify right side
    1,216,526.42x = 1,129,065,068,862.03
  5. Step 5: Solve for x
    x = 1,129,065,068,862.03/1,216,526.42
  6. Step 6: Final answer
    x = 928,105.67

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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.