Home / 558,421.80-837,632.70-402,124.20

Finding the Fourth Proportional to 558,421.80, 837,632.70 and 402,124.20

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Solution

The fourth proportional to 558,421.80, 837,632.70 and 402,124.20 is: 603,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,421.80 : 837,632.70 = 402,124.20 : x
  2. Step 2: Convert to fraction form
    558,421.80/837,632.70 = 402,124.20/x
  3. Step 3: Cross multiply
    558,421.80x = 837,632.70 × 402,124.20
  4. Step 4: Simplify right side
    558,421.80x = 336,832,379,381.34
  5. Step 5: Solve for x
    x = 336,832,379,381.34/558,421.80
  6. Step 6: Final answer
    x = 603,186.30

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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.