Home / 1,390,084.34-1,917,746.28-845,783.78

Finding the Fourth Proportional to 1,390,084.34, 1,917,746.28 and 845,783.78

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Solution

The fourth proportional to 1,390,084.34, 1,917,746.28 and 845,783.78 is: 1,166,834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,084.34 : 1,917,746.28 = 845,783.78 : x
  2. Step 2: Convert to fraction form
    1,390,084.34/1,917,746.28 = 845,783.78/x
  3. Step 3: Cross multiply
    1,390,084.34x = 1,917,746.28 × 845,783.78
  4. Step 4: Simplify right side
    1,390,084.34x = 1,621,998,688,190.61
  5. Step 5: Solve for x
    x = 1,621,998,688,190.61/1,390,084.34
  6. Step 6: Final answer
    x = 1,166,834.74

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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.