Home / 1,390,673.75-1,919,038.42-778,686.22

Finding the Fourth Proportional to 1,390,673.75, 1,919,038.42 and 778,686.22

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Solution

The fourth proportional to 1,390,673.75, 1,919,038.42 and 778,686.22 is: 1,074,535.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,673.75 : 1,919,038.42 = 778,686.22 : x
  2. Step 2: Convert to fraction form
    1,390,673.75/1,919,038.42 = 778,686.22/x
  3. Step 3: Cross multiply
    1,390,673.75x = 1,919,038.42 × 778,686.22
  4. Step 4: Simplify right side
    1,390,673.75x = 1,494,328,773,304.57
  5. Step 5: Solve for x
    x = 1,494,328,773,304.57/1,390,673.75
  6. Step 6: Final answer
    x = 1,074,535.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.