Home / 1,185,795.90-1,636,397.98-641,931.28

Finding the Fourth Proportional to 1,185,795.90, 1,636,397.98 and 641,931.28

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Solution

The fourth proportional to 1,185,795.90, 1,636,397.98 and 641,931.28 is: 885,864.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,795.90 : 1,636,397.98 = 641,931.28 : x
  2. Step 2: Convert to fraction form
    1,185,795.90/1,636,397.98 = 641,931.28/x
  3. Step 3: Cross multiply
    1,185,795.90x = 1,636,397.98 × 641,931.28
  4. Step 4: Simplify right side
    1,185,795.90x = 1,050,455,049,890.81
  5. Step 5: Solve for x
    x = 1,050,455,049,890.81/1,185,795.90
  6. Step 6: Final answer
    x = 885,864.97

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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.