Home / 647,985.80-971,541.30-344,430.20

Finding the Fourth Proportional to 647,985.80, 971,541.30 and 344,430.20

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Solution

The fourth proportional to 647,985.80, 971,541.30 and 344,430.20 is: 516,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,985.80 : 971,541.30 = 344,430.20 : x
  2. Step 2: Convert to fraction form
    647,985.80/971,541.30 = 344,430.20/x
  3. Step 3: Cross multiply
    647,985.80x = 971,541.30 × 344,430.20
  4. Step 4: Simplify right side
    647,985.80x = 334,628,164,267.26
  5. Step 5: Solve for x
    x = 334,628,164,267.26/647,985.80
  6. Step 6: Final answer
    x = 516,412.80

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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.