Home / 710,037.60-1,065,661.20-289,615.20

Finding the Fourth Proportional to 710,037.60, 1,065,661.20 and 289,615.20

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Solution

The fourth proportional to 710,037.60, 1,065,661.20 and 289,615.20 is: 434,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,037.60 : 1,065,661.20 = 289,615.20 : x
  2. Step 2: Convert to fraction form
    710,037.60/1,065,661.20 = 289,615.20/x
  3. Step 3: Cross multiply
    710,037.60x = 1,065,661.20 × 289,615.20
  4. Step 4: Simplify right side
    710,037.60x = 308,631,681,570.24
  5. Step 5: Solve for x
    x = 308,631,681,570.24/710,037.60
  6. Step 6: Final answer
    x = 434,669.49

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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.