Home / 1,578,936,000.30-2,368,404,000.45-430,078,656.30

Finding the Fourth Proportional to 1,578,936,000.30, 2,368,404,000.45 and 430,078,656.30

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Solution

The fourth proportional to 1,578,936,000.30, 2,368,404,000.45 and 430,078,656.30 is: 645,117,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578,936,000.30 : 2,368,404,000.45 = 430,078,656.30 : x
  2. Step 2: Convert to fraction form
    1,578,936,000.30/2,368,404,000.45 = 430,078,656.30/x
  3. Step 3: Cross multiply
    1,578,936,000.30x = 2,368,404,000.45 × 430,078,656.30
  4. Step 4: Simplify right side
    1,578,936,000.30x = 1,018,600,010,089,080,576
  5. Step 5: Solve for x
    x = 1,018,600,010,089,080,576/1,578,936,000.30
  6. Step 6: Final answer
    x = 645,117,984.45

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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.