Home / 827,730.12-1,142,262.90-505,395.48

Finding the Fourth Proportional to 827,730.12, 1,142,262.90 and 505,395.48

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Solution

The fourth proportional to 827,730.12, 1,142,262.90 and 505,395.48 is: 697,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,730.12 : 1,142,262.90 = 505,395.48 : x
  2. Step 2: Convert to fraction form
    827,730.12/1,142,262.90 = 505,395.48/x
  3. Step 3: Cross multiply
    827,730.12x = 1,142,262.90 × 505,395.48
  4. Step 4: Simplify right side
    827,730.12x = 577,294,506,631.69
  5. Step 5: Solve for x
    x = 577,294,506,631.69/827,730.12
  6. Step 6: Final answer
    x = 697,442.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.