Home / 421,611,010,253.76-581,806,875,807.84-228,918,772,875.72

Finding the Fourth Proportional to 421,611,010,253.76, 581,806,875,807.84 and 228,918,772,875.72

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Solution

The fourth proportional to 421,611,010,253.76, 581,806,875,807.84 and 228,918,772,875.72 is: 315,899,046,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,611,010,253.76 : 581,806,875,807.84 = 228,918,772,875.72 : x
  2. Step 2: Convert to fraction form
    421,611,010,253.76/581,806,875,807.84 = 228,918,772,875.72/x
  3. Step 3: Cross multiply
    421,611,010,253.76x = 581,806,875,807.84 × 228,918,772,875.72
  4. Step 4: Simplify right side
    421,611,010,253.76x = 133,186,516,060,587,142,676,480
  5. Step 5: Solve for x
    x = 133,186,516,060,587,142,676,480/421,611,010,253.76
  6. Step 6: Final answer
    x = 315,899,046,328.09

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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.