Home / 528,428.12-793,003.62-212,909.72

Finding the Fourth Proportional to 528,428.12, 793,003.62 and 212,909.72

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Solution

The fourth proportional to 528,428.12, 793,003.62 and 212,909.72 is: 319,510.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,428.12 : 793,003.62 = 212,909.72 : x
  2. Step 2: Convert to fraction form
    528,428.12/793,003.62 = 212,909.72/x
  3. Step 3: Cross multiply
    528,428.12x = 793,003.62 × 212,909.72
  4. Step 4: Simplify right side
    528,428.12x = 168,838,178,693.19
  5. Step 5: Solve for x
    x = 168,838,178,693.19/528,428.12
  6. Step 6: Final answer
    x = 319,510.21

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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.