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Finding the Fourth Proportional to 286,985,809.60, 430,478,714.40 and 259,776,030.40

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Solution

The fourth proportional to 286,985,809.60, 430,478,714.40 and 259,776,030.40 is: 389,664,045.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,985,809.60 : 430,478,714.40 = 259,776,030.40 : x
  2. Step 2: Convert to fraction form
    286,985,809.60/430,478,714.40 = 259,776,030.40/x
  3. Step 3: Cross multiply
    286,985,809.60x = 430,478,714.40 × 259,776,030.40
  4. Step 4: Simplify right side
    286,985,809.60x = 111,828,051,598,527,312
  5. Step 5: Solve for x
    x = 111,828,051,598,527,312/286,985,809.60
  6. Step 6: Final answer
    x = 389,664,045.60

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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.