Home / 761,870.04-1,048,986.77-646,906.74

Finding the Fourth Proportional to 761,870.04, 1,048,986.77 and 646,906.74

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Solution

The fourth proportional to 761,870.04, 1,048,986.77 and 646,906.74 is: 890,698.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,870.04 : 1,048,986.77 = 646,906.74 : x
  2. Step 2: Convert to fraction form
    761,870.04/1,048,986.77 = 646,906.74/x
  3. Step 3: Cross multiply
    761,870.04x = 1,048,986.77 × 646,906.74
  4. Step 4: Simplify right side
    761,870.04x = 678,596,608,449.30
  5. Step 5: Solve for x
    x = 678,596,608,449.30/761,870.04
  6. Step 6: Final answer
    x = 890,698.64

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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.