Home / 720,584,368.30-1,078,724,216.40-429,301,556.20

Finding the Fourth Proportional to 720,584,368.30, 1,078,724,216.40 and 429,301,556.20

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Solution

The fourth proportional to 720,584,368.30, 1,078,724,216.40 and 429,301,556.20 is: 642,670,040.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,584,368.30 : 1,078,724,216.40 = 429,301,556.20 : x
  2. Step 2: Convert to fraction form
    720,584,368.30/1,078,724,216.40 = 429,301,556.20/x
  3. Step 3: Cross multiply
    720,584,368.30x = 1,078,724,216.40 × 429,301,556.20
  4. Step 4: Simplify right side
    720,584,368.30x = 463,097,984,811,145,600
  5. Step 5: Solve for x
    x = 463,097,984,811,145,600/720,584,368.30
  6. Step 6: Final answer
    x = 642,670,040.02

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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.