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Finding the Fourth Proportional to 6,426,978.30, 8,869,393.30 and 3,526,368.40

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Solution

The fourth proportional to 6,426,978.30, 8,869,393.30 and 3,526,368.40 is: 4,866,477.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,426,978.30 : 8,869,393.30 = 3,526,368.40 : x
  2. Step 2: Convert to fraction form
    6,426,978.30/8,869,393.30 = 3,526,368.40/x
  3. Step 3: Cross multiply
    6,426,978.30x = 8,869,393.30 × 3,526,368.40
  4. Step 4: Simplify right side
    6,426,978.30x = 31,276,748,260,291.72
  5. Step 5: Solve for x
    x = 31,276,748,260,291.72/6,426,978.30
  6. Step 6: Final answer
    x = 4,866,477.96

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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.