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Finding the Fourth Proportional to 665,866.22, 999,510.10 and 286,973.93

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Solution

The fourth proportional to 665,866.22, 999,510.10 and 286,973.93 is: 430,767.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,866.22 : 999,510.10 = 286,973.93 : x
  2. Step 2: Convert to fraction form
    665,866.22/999,510.10 = 286,973.93/x
  3. Step 3: Cross multiply
    665,866.22x = 999,510.10 × 286,973.93
  4. Step 4: Simplify right side
    665,866.22x = 286,833,340,036.82
  5. Step 5: Solve for x
    x = 286,833,340,036.82/665,866.22
  6. Step 6: Final answer
    x = 430,767.22

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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.