Home / 1,210,867.02-1,670,988.71-666,990.21

Finding the Fourth Proportional to 1,210,867.02, 1,670,988.71 and 666,990.21

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Solution

The fourth proportional to 1,210,867.02, 1,670,988.71 and 666,990.21 is: 920,442.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,867.02 : 1,670,988.71 = 666,990.21 : x
  2. Step 2: Convert to fraction form
    1,210,867.02/1,670,988.71 = 666,990.21/x
  3. Step 3: Cross multiply
    1,210,867.02x = 1,670,988.71 × 666,990.21
  4. Step 4: Simplify right side
    1,210,867.02x = 1,114,533,110,590.53
  5. Step 5: Solve for x
    x = 1,114,533,110,590.53/1,210,867.02
  6. Step 6: Final answer
    x = 920,442.21

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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.