Home / 485,037.28-723,762.55-434,603.62

Finding the Fourth Proportional to 485,037.28, 723,762.55 and 434,603.62

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Solution

The fourth proportional to 485,037.28, 723,762.55 and 434,603.62 is: 648,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,037.28 : 723,762.55 = 434,603.62 : x
  2. Step 2: Convert to fraction form
    485,037.28/723,762.55 = 434,603.62/x
  3. Step 3: Cross multiply
    485,037.28x = 723,762.55 × 434,603.62
  4. Step 4: Simplify right side
    485,037.28x = 314,549,824,250.43
  5. Step 5: Solve for x
    x = 314,549,824,250.43/485,037.28
  6. Step 6: Final answer
    x = 648,506.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.