Home / 991,880.40-1,487,820.60-637,586.40

Finding the Fourth Proportional to 991,880.40, 1,487,820.60 and 637,586.40

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Solution

The fourth proportional to 991,880.40, 1,487,820.60 and 637,586.40 is: 956,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,880.40 : 1,487,820.60 = 637,586.40 : x
  2. Step 2: Convert to fraction form
    991,880.40/1,487,820.60 = 637,586.40/x
  3. Step 3: Cross multiply
    991,880.40x = 1,487,820.60 × 637,586.40
  4. Step 4: Simplify right side
    991,880.40x = 948,614,180,199.84
  5. Step 5: Solve for x
    x = 948,614,180,199.84/991,880.40
  6. Step 6: Final answer
    x = 956,379.60

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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.