Home / 991,878.40-1,487,817.60-432,006.40

Finding the Fourth Proportional to 991,878.40, 1,487,817.60 and 432,006.40

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Solution

The fourth proportional to 991,878.40, 1,487,817.60 and 432,006.40 is: 648,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,878.40 : 1,487,817.60 = 432,006.40 : x
  2. Step 2: Convert to fraction form
    991,878.40/1,487,817.60 = 432,006.40/x
  3. Step 3: Cross multiply
    991,878.40x = 1,487,817.60 × 432,006.40
  4. Step 4: Simplify right side
    991,878.40x = 642,746,725,232.64
  5. Step 5: Solve for x
    x = 642,746,725,232.64/991,878.40
  6. Step 6: Final answer
    x = 648,009.60

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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.