Finding the Fourth Proportional to 391,140,587,711.60, 586,710,881,567.40 and 272,125,013,490.80
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Solution
The fourth proportional to 391,140,587,711.60, 586,710,881,567.40 and 272,125,013,490.80 is: 408,187,520,236.20
Step by Step Solution
- Step 1: Write the proportion equation
391,140,587,711.60 : 586,710,881,567.40 = 272,125,013,490.80 : x - Step 2: Convert to fraction form
391,140,587,711.60/586,710,881,567.40 = 272,125,013,490.80/x - Step 3: Cross multiply
391,140,587,711.60x = 586,710,881,567.40 × 272,125,013,490.80 - Step 4: Simplify right side
391,140,587,711.60x = 159,658,706,561,727,870,271,488 - Step 5: Solve for x
x = 159,658,706,561,727,870,271,488/391,140,587,711.60 - Step 6: Final answer
x = 408,187,520,236.20
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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.