Home / 646,438.60-971,213.10-578,009.80

Finding the Fourth Proportional to 646,438.60, 971,213.10 and 578,009.80

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Solution

The fourth proportional to 646,438.60, 971,213.10 and 578,009.80 is: 868,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,438.60 : 971,213.10 = 578,009.80 : x
  2. Step 2: Convert to fraction form
    646,438.60/971,213.10 = 578,009.80/x
  3. Step 3: Cross multiply
    646,438.60x = 971,213.10 × 578,009.80
  4. Step 4: Simplify right side
    646,438.60x = 561,370,689,688.38
  5. Step 5: Solve for x
    x = 561,370,689,688.38/646,438.60
  6. Step 6: Final answer
    x = 868,405.27

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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.