Home / 1,189,818-1,784,056.30-390,885.03

Finding the Fourth Proportional to 1,189,818, 1,784,056.30 and 390,885.03

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Solution

The fourth proportional to 1,189,818, 1,784,056.30 and 390,885.03 is: 586,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,818 : 1,784,056.30 = 390,885.03 : x
  2. Step 2: Convert to fraction form
    1,189,818/1,784,056.30 = 390,885.03/x
  3. Step 3: Cross multiply
    1,189,818x = 1,784,056.30 × 390,885.03
  4. Step 4: Simplify right side
    1,189,818x = 697,360,900,347.19
  5. Step 5: Solve for x
    x = 697,360,900,347.19/1,189,818
  6. Step 6: Final answer
    x = 586,107.20

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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.