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Finding the Fourth Proportional to 722,448.95, 996,995.66 and 412,345.31

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Solution

The fourth proportional to 722,448.95, 996,995.66 and 412,345.31 is: 569,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,448.95 : 996,995.66 = 412,345.31 : x
  2. Step 2: Convert to fraction form
    722,448.95/996,995.66 = 412,345.31/x
  3. Step 3: Cross multiply
    722,448.95x = 996,995.66 × 412,345.31
  4. Step 4: Simplify right side
    722,448.95x = 411,106,477,444.65
  5. Step 5: Solve for x
    x = 411,106,477,444.65/722,448.95
  6. Step 6: Final answer
    x = 569,045.72

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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.