Home / 870,276.80-1,200,985.44-488,278.64

Finding the Fourth Proportional to 870,276.80, 1,200,985.44 and 488,278.64

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Solution

The fourth proportional to 870,276.80, 1,200,985.44 and 488,278.64 is: 673,826.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,276.80 : 1,200,985.44 = 488,278.64 : x
  2. Step 2: Convert to fraction form
    870,276.80/1,200,985.44 = 488,278.64/x
  3. Step 3: Cross multiply
    870,276.80x = 1,200,985.44 × 488,278.64
  4. Step 4: Simplify right side
    870,276.80x = 586,415,537,303.00
  5. Step 5: Solve for x
    x = 586,415,537,303.00/870,276.80
  6. Step 6: Final answer
    x = 673,826.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.