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Finding the Fourth Proportional to 911,804.40, 1,366,870.32 and 350,416.08

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Solution

The fourth proportional to 911,804.40, 1,366,870.32 and 350,416.08 is: 525,302.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,804.40 : 1,366,870.32 = 350,416.08 : x
  2. Step 2: Convert to fraction form
    911,804.40/1,366,870.32 = 350,416.08/x
  3. Step 3: Cross multiply
    911,804.40x = 1,366,870.32 × 350,416.08
  4. Step 4: Simplify right side
    911,804.40x = 478,973,339,402.75
  5. Step 5: Solve for x
    x = 478,973,339,402.75/911,804.40
  6. Step 6: Final answer
    x = 525,302.73

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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.