Home / 977,702.80-1,465,679.40-640,904.80

Finding the Fourth Proportional to 977,702.80, 1,465,679.40 and 640,904.80

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Solution

The fourth proportional to 977,702.80, 1,465,679.40 and 640,904.80 is: 960,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,702.80 : 1,465,679.40 = 640,904.80 : x
  2. Step 2: Convert to fraction form
    977,702.80/1,465,679.40 = 640,904.80/x
  3. Step 3: Cross multiply
    977,702.80x = 1,465,679.40 × 640,904.80
  4. Step 4: Simplify right side
    977,702.80x = 939,360,962,721.12
  5. Step 5: Solve for x
    x = 939,360,962,721.12/977,702.80
  6. Step 6: Final answer
    x = 960,783.75

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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.