Home / 645,927.12-890,455.62-454,345.92

Finding the Fourth Proportional to 645,927.12, 890,455.62 and 454,345.92

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Solution

The fourth proportional to 645,927.12, 890,455.62 and 454,345.92 is: 626,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,927.12 : 890,455.62 = 454,345.92 : x
  2. Step 2: Convert to fraction form
    645,927.12/890,455.62 = 454,345.92/x
  3. Step 3: Cross multiply
    645,927.12x = 890,455.62 × 454,345.92
  4. Step 4: Simplify right side
    645,927.12x = 404,574,877,888.07
  5. Step 5: Solve for x
    x = 404,574,877,888.07/645,927.12
  6. Step 6: Final answer
    x = 626,347.56

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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.