Home / 679,632.07-1,018,774.63-319,157.64

Finding the Fourth Proportional to 679,632.07, 1,018,774.63 and 319,157.64

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Solution

The fourth proportional to 679,632.07, 1,018,774.63 and 319,157.64 is: 478,420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,632.07 : 1,018,774.63 = 319,157.64 : x
  2. Step 2: Convert to fraction form
    679,632.07/1,018,774.63 = 319,157.64/x
  3. Step 3: Cross multiply
    679,632.07x = 1,018,774.63 × 319,157.64
  4. Step 4: Simplify right side
    679,632.07x = 325,149,706,602.67
  5. Step 5: Solve for x
    x = 325,149,706,602.67/679,632.07
  6. Step 6: Final answer
    x = 478,420.19

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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.