Home / 679,901.40-1,020,143.70-347,477.40

Finding the Fourth Proportional to 679,901.40, 1,020,143.70 and 347,477.40

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Solution

The fourth proportional to 679,901.40, 1,020,143.70 and 347,477.40 is: 521,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,901.40 : 1,020,143.70 = 347,477.40 : x
  2. Step 2: Convert to fraction form
    679,901.40/1,020,143.70 = 347,477.40/x
  3. Step 3: Cross multiply
    679,901.40x = 1,020,143.70 × 347,477.40
  4. Step 4: Simplify right side
    679,901.40x = 354,476,880,502.38
  5. Step 5: Solve for x
    x = 354,476,880,502.38/679,901.40
  6. Step 6: Final answer
    x = 521,365.13

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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.