Home / 901,221.50-1,243,705.12-498,813.50

Finding the Fourth Proportional to 901,221.50, 1,243,705.12 and 498,813.50

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Solution

The fourth proportional to 901,221.50, 1,243,705.12 and 498,813.50 is: 688,373.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,221.50 : 1,243,705.12 = 498,813.50 : x
  2. Step 2: Convert to fraction form
    901,221.50/1,243,705.12 = 498,813.50/x
  3. Step 3: Cross multiply
    901,221.50x = 1,243,705.12 × 498,813.50
  4. Step 4: Simplify right side
    901,221.50x = 620,376,903,875.12
  5. Step 5: Solve for x
    x = 620,376,903,875.12/901,221.50
  6. Step 6: Final answer
    x = 688,373.40

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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.