Home / 784,295.40-1,177,220.70-385,386.60

Finding the Fourth Proportional to 784,295.40, 1,177,220.70 and 385,386.60

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Solution

The fourth proportional to 784,295.40, 1,177,220.70 and 385,386.60 is: 578,462.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,295.40 : 1,177,220.70 = 385,386.60 : x
  2. Step 2: Convert to fraction form
    784,295.40/1,177,220.70 = 385,386.60/x
  3. Step 3: Cross multiply
    784,295.40x = 1,177,220.70 × 385,386.60
  4. Step 4: Simplify right side
    784,295.40x = 453,685,083,022.62
  5. Step 5: Solve for x
    x = 453,685,083,022.62/784,295.40
  6. Step 6: Final answer
    x = 578,462.00

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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.