Home / 740,809.40-1,111,214.10-512,486.60

Finding the Fourth Proportional to 740,809.40, 1,111,214.10 and 512,486.60

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Solution

The fourth proportional to 740,809.40, 1,111,214.10 and 512,486.60 is: 768,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,809.40 : 1,111,214.10 = 512,486.60 : x
  2. Step 2: Convert to fraction form
    740,809.40/1,111,214.10 = 512,486.60/x
  3. Step 3: Cross multiply
    740,809.40x = 1,111,214.10 × 512,486.60
  4. Step 4: Simplify right side
    740,809.40x = 569,482,335,981.06
  5. Step 5: Solve for x
    x = 569,482,335,981.06/740,809.40
  6. Step 6: Final answer
    x = 768,729.90

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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.