Home / 429,689,302.41-643,249,277.40-263,168,485.86

Finding the Fourth Proportional to 429,689,302.41, 643,249,277.40 and 263,168,485.86

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Solution

The fourth proportional to 429,689,302.41, 643,249,277.40 and 263,168,485.86 is: 393,965,913.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,689,302.41 : 643,249,277.40 = 263,168,485.86 : x
  2. Step 2: Convert to fraction form
    429,689,302.41/643,249,277.40 = 263,168,485.86/x
  3. Step 3: Cross multiply
    429,689,302.41x = 643,249,277.40 × 263,168,485.86
  4. Step 4: Simplify right side
    429,689,302.41x = 169,282,938,363,897,120
  5. Step 5: Solve for x
    x = 169,282,938,363,897,120/429,689,302.41
  6. Step 6: Final answer
    x = 393,965,913.08

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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.