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Finding the Fourth Proportional to 907,271.40, 1,360,907.10 and 636,666.60

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Solution

The fourth proportional to 907,271.40, 1,360,907.10 and 636,666.60 is: 954,999.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,271.40 : 1,360,907.10 = 636,666.60 : x
  2. Step 2: Convert to fraction form
    907,271.40/1,360,907.10 = 636,666.60/x
  3. Step 3: Cross multiply
    907,271.40x = 1,360,907.10 × 636,666.60
  4. Step 4: Simplify right side
    907,271.40x = 866,444,096,272.86
  5. Step 5: Solve for x
    x = 866,444,096,272.86/907,271.40
  6. Step 6: Final answer
    x = 954,999.90

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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.