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Finding the Fourth Proportional to 702,779.76, 969,836.63 and 380,490.08

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Solution

The fourth proportional to 702,779.76, 969,836.63 and 380,490.08 is: 525,076.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,779.76 : 969,836.63 = 380,490.08 : x
  2. Step 2: Convert to fraction form
    702,779.76/969,836.63 = 380,490.08/x
  3. Step 3: Cross multiply
    702,779.76x = 969,836.63 × 380,490.08
  4. Step 4: Simplify right side
    702,779.76x = 369,013,210,184.00
  5. Step 5: Solve for x
    x = 369,013,210,184.00/702,779.76
  6. Step 6: Final answer
    x = 525,076.60

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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.