Home / 790,806,090.42-1,091,312,388.54-438,381,188.10

Finding the Fourth Proportional to 790,806,090.42, 1,091,312,388.54 and 438,381,188.10

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Solution

The fourth proportional to 790,806,090.42, 1,091,312,388.54 and 438,381,188.10 is: 604,966,030.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,806,090.42 : 1,091,312,388.54 = 438,381,188.10 : x
  2. Step 2: Convert to fraction form
    790,806,090.42/1,091,312,388.54 = 438,381,188.10/x
  3. Step 3: Cross multiply
    790,806,090.42x = 1,091,312,388.54 × 438,381,188.10
  4. Step 4: Simplify right side
    790,806,090.42x = 478,410,821,476,414,016
  5. Step 5: Solve for x
    x = 478,410,821,476,414,016/790,806,090.42
  6. Step 6: Final answer
    x = 604,966,030.58

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Double scale
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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.