Home / 1,401,821.42-2,102,701.80-390,916.40

Finding the Fourth Proportional to 1,401,821.42, 2,102,701.80 and 390,916.40

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Solution

The fourth proportional to 1,401,821.42, 2,102,701.80 and 390,916.40 is: 586,366.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401,821.42 : 2,102,701.80 = 390,916.40 : x
  2. Step 2: Convert to fraction form
    1,401,821.42/2,102,701.80 = 390,916.40/x
  3. Step 3: Cross multiply
    1,401,821.42x = 2,102,701.80 × 390,916.40
  4. Step 4: Simplify right side
    1,401,821.42x = 821,980,617,929.52
  5. Step 5: Solve for x
    x = 821,980,617,929.52/1,401,821.42
  6. Step 6: Final answer
    x = 586,366.14

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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.