Home / 729,699.18-1,007,085.60-407,430.15

Finding the Fourth Proportional to 729,699.18, 1,007,085.60 and 407,430.15

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Solution

The fourth proportional to 729,699.18, 1,007,085.60 and 407,430.15 is: 562,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,699.18 : 1,007,085.60 = 407,430.15 : x
  2. Step 2: Convert to fraction form
    729,699.18/1,007,085.60 = 407,430.15/x
  3. Step 3: Cross multiply
    729,699.18x = 1,007,085.60 × 407,430.15
  4. Step 4: Simplify right side
    729,699.18x = 410,317,037,070.84
  5. Step 5: Solve for x
    x = 410,317,037,070.84/729,699.18
  6. Step 6: Final answer
    x = 562,309.85

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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.