Home / 678,802.10-1,017,943.95-205,330.10

Finding the Fourth Proportional to 678,802.10, 1,017,943.95 and 205,330.10

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Solution

The fourth proportional to 678,802.10, 1,017,943.95 and 205,330.10 is: 307,916.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,802.10 : 1,017,943.95 = 205,330.10 : x
  2. Step 2: Convert to fraction form
    678,802.10/1,017,943.95 = 205,330.10/x
  3. Step 3: Cross multiply
    678,802.10x = 1,017,943.95 × 205,330.10
  4. Step 4: Simplify right side
    678,802.10x = 209,014,533,047.90
  5. Step 5: Solve for x
    x = 209,014,533,047.90/678,802.10
  6. Step 6: Final answer
    x = 307,916.74

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1.5x scale

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.