Home / 877,643.60-1,316,465.40-212,795.60

Finding the Fourth Proportional to 877,643.60, 1,316,465.40 and 212,795.60

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Solution

The fourth proportional to 877,643.60, 1,316,465.40 and 212,795.60 is: 319,193.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,643.60 : 1,316,465.40 = 212,795.60 : x
  2. Step 2: Convert to fraction form
    877,643.60/1,316,465.40 = 212,795.60/x
  3. Step 3: Cross multiply
    877,643.60x = 1,316,465.40 × 212,795.60
  4. Step 4: Simplify right side
    877,643.60x = 280,138,044,672.24
  5. Step 5: Solve for x
    x = 280,138,044,672.24/877,643.60
  6. Step 6: Final answer
    x = 319,193.40

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Double scale
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Similar ratio
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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.