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Finding the Fourth Proportional to 875,109.60, 1,312,664.40 and 837,784.80

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Solution

The fourth proportional to 875,109.60, 1,312,664.40 and 837,784.80 is: 1,256,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,109.60 : 1,312,664.40 = 837,784.80 : x
  2. Step 2: Convert to fraction form
    875,109.60/1,312,664.40 = 837,784.80/x
  3. Step 3: Cross multiply
    875,109.60x = 1,312,664.40 × 837,784.80
  4. Step 4: Simplify right side
    875,109.60x = 1,099,730,281,821.12
  5. Step 5: Solve for x
    x = 1,099,730,281,821.12/875,109.60
  6. Step 6: Final answer
    x = 1,256,677.20

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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.