Home / 1,390,269.60-2,085,404.40-681,681.60

Finding the Fourth Proportional to 1,390,269.60, 2,085,404.40 and 681,681.60

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Solution

The fourth proportional to 1,390,269.60, 2,085,404.40 and 681,681.60 is: 1,022,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,269.60 : 2,085,404.40 = 681,681.60 : x
  2. Step 2: Convert to fraction form
    1,390,269.60/2,085,404.40 = 681,681.60/x
  3. Step 3: Cross multiply
    1,390,269.60x = 2,085,404.40 × 681,681.60
  4. Step 4: Simplify right side
    1,390,269.60x = 1,421,581,808,039.04
  5. Step 5: Solve for x
    x = 1,421,581,808,039.04/1,390,269.60
  6. Step 6: Final answer
    x = 1,022,522.40

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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.