Home / 768,007.80-1,152,011.70-430,702.20

Finding the Fourth Proportional to 768,007.80, 1,152,011.70 and 430,702.20

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Solution

The fourth proportional to 768,007.80, 1,152,011.70 and 430,702.20 is: 646,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,007.80 : 1,152,011.70 = 430,702.20 : x
  2. Step 2: Convert to fraction form
    768,007.80/1,152,011.70 = 430,702.20/x
  3. Step 3: Cross multiply
    768,007.80x = 1,152,011.70 × 430,702.20
  4. Step 4: Simplify right side
    768,007.80x = 496,173,973,615.74
  5. Step 5: Solve for x
    x = 496,173,973,615.74/768,007.80
  6. Step 6: Final answer
    x = 646,053.30

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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.