Home / 805,875.80-1,207,355.70-638,497.40

Finding the Fourth Proportional to 805,875.80, 1,207,355.70 and 638,497.40

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Solution

The fourth proportional to 805,875.80, 1,207,355.70 and 638,497.40 is: 956,590.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,875.80 : 1,207,355.70 = 638,497.40 : x
  2. Step 2: Convert to fraction form
    805,875.80/1,207,355.70 = 638,497.40/x
  3. Step 3: Cross multiply
    805,875.80x = 1,207,355.70 × 638,497.40
  4. Step 4: Simplify right side
    805,875.80x = 770,893,475,325.18
  5. Step 5: Solve for x
    x = 770,893,475,325.18/805,875.80
  6. Step 6: Final answer
    x = 956,590.92

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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.