Home / 877,538.40-1,316,307.60-212,690.40

Finding the Fourth Proportional to 877,538.40, 1,316,307.60 and 212,690.40

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Solution

The fourth proportional to 877,538.40, 1,316,307.60 and 212,690.40 is: 319,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,538.40 : 1,316,307.60 = 212,690.40 : x
  2. Step 2: Convert to fraction form
    877,538.40/1,316,307.60 = 212,690.40/x
  3. Step 3: Cross multiply
    877,538.40x = 1,316,307.60 × 212,690.40
  4. Step 4: Simplify right side
    877,538.40x = 279,965,989,967.04
  5. Step 5: Solve for x
    x = 279,965,989,967.04/877,538.40
  6. Step 6: Final answer
    x = 319,035.60

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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.