Home / 501,980,627.79-692,750,088.69-278,971,708.86

Finding the Fourth Proportional to 501,980,627.79, 692,750,088.69 and 278,971,708.86

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Solution

The fourth proportional to 501,980,627.79, 692,750,088.69 and 278,971,708.86 is: 384,990,307.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,980,627.79 : 692,750,088.69 = 278,971,708.86 : x
  2. Step 2: Convert to fraction form
    501,980,627.79/692,750,088.69 = 278,971,708.86/x
  3. Step 3: Cross multiply
    501,980,627.79x = 692,750,088.69 × 278,971,708.86
  4. Step 4: Simplify right side
    501,980,627.79x = 193,257,676,054,765,888
  5. Step 5: Solve for x
    x = 193,257,676,054,765,888/501,980,627.79
  6. Step 6: Final answer
    x = 384,990,307.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.